Vehicle-jack.



w. R. GRAY.

VEHICLE IACK.

APPLICATION ElLED JUNE li |915.

Patented May 23,1916.

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r w. n. GRAY. VEHICLE JACK.

APPLICATION FILED JUNE 1| i915.

'15183;9'20. Patented May 23,1916.`

2 SHEETS-SHEET 2.

, @in l 225 m mL\\\\\\\\\\\\\\\\\\v WALLACE n. GRAY, or nmnnnmnne,KENTUCKY.

VEHICLE-JACK.

Specification of Letters Patent. I

ratenteu May 23,1916.

Application filed J une 1, 1915. Serial No. 31,542.

To all 'whom 'it may concern Be it known that I, WALLACE R. GRAY, acitizen of the United States, residing at Brandenberg,A in the county ofMeade and State of Kentucky, have invented certain new and usefulImprovements in Vehiclef Jacks; and I do declare the following to be afull, clear, and exact description of the invention; such as will enableothers skilled in the'art to which it appertains to make and use thesame.

This invention relates to vehicle jacks and more particularly to thatclass of jacks having a supplemental body or platform adapted to beraised or lowered, and has for its object the provision of adevice ofthis character especially adapted for lifting or moving vehicles fromplace to place. y

A further objectI of this invention is to provide a device which issimple and durable in construction, inexpensive to manufacture, and onewhich will be very efficient in operation.

With these and numerous other objects inV View, my invention consists ofthe novel features of construction7 combination. and arrangement ofparts which will be herein referred to and more particularly pointed outin the specification and claim.

In the accompanying drawings: Figure 1 is a side elevation of in vimproved light type of vehicle jack; Fig. 2 is a top plan view of thesame; Fig. 3 is a substantially central vertical longitudinal section;Fig. 4 is a side elevation of- 1ny heavy type of vehicle jack; Fig. 5 isa top plan View of the saine; and Fig. 6 is a substantially centralvertical longitudinal section of the same.

In describingl my invention, I shall refer to the drawings in whichsimilar reference characters designate corresponding parts z throughoutthe several views.

areparallel longxtudinallycxtending `dii.

Referring to the device illustrated in Figs. 1 to 3, my invention`consists of a body comprising a rectangular frame consisting of twoparallel ,side bars l having their front ends connected by atransversely extending bar 2 and their rear ends bya transverselyextendin rod 3. Wheels 4 are mounted on the sald body near its front endfor the purpose of enabling it to be easily moved when desired. Pivotedat their lower ends to the side bars 1 are a pair of swinging uprightsfl on each side board. Pivoted to the' upper endspf, the upri hts tionalside boards 5 adapted to form a su plemental frame upon which thevehicle willl rest. The two swinging uprights at the front end of theframe are connected by a. transversely extending rod 6. A longitudinallyextending link 8 is loosely connected to the said rod 6 at one end asshown at 7, and has its other end 9 pivotedto a bifurcated lever 10.This lever 1() which is the operating lever of the jack is pivoted atits lower end as shown at -12 to the rod 8 of the body. The end of thelink 8- projects through the bifurcated lever and extends a shortdistance beyond for a purpose to be hereinafter described. Pivoted tothe lever and spaced a short distance above where the same is pivoted tothe link 8, is a U-shaped locking member 13 which is adapted to lock thelink to the lever when the jack is in raised position.

In. Figs. 4 to 6 is shown a slightly modilied form of my device whichconsists of a rectangular shaped body comprislng side bars 1" with atransversely extending front bar 2y and the rear ends of the side barsconnected by a transversely extending platey prevent the said uprightsfrom being'forced inward upon a heavy weight being placed l upon thesupplemental frame.

A longitudinally extending link 8 has one of its ends 17 connected tothetransversgely extending shaft 15 by'a'n additional linli'lwhile theother end-19 of the link, is eccentrlcally mountedl on`- a worm gear 27whith is positioned on a transversely extendina' y'bar 3a near the rearend of the body. Projecting through the plate 2 in the rea-r end of thebody, is a screw 21 having a hanloo dle 22 on one end and the other endadapted to fit into a bea-ring 23 which is held by a plate 24 extendinglongitudinally from :the

plate 2 between the side bars of the body.` This plate 24 is held in thebody by a'brace 26 extending transversely 'from one ofthe side barsvtothe said plate. The Screw 21 has a. collar adjacent the .inner side ofthe plate 201:9 prevent any inward or outward l be turnedin any desiredposition. f l f In operation, when 1t is desired to lift a y l vehicleof .comparatively light Weight, the

form of jack first described is best adapted for use. The vehicle'is runover the Itop of this devicel when the supplemental frame is low eredand spaced but a short distance above y the rectangular main frame. Thebifurcated lever l0 is then reciprocated longitudinally of' the frameand this will draw the transversely extending bar 6 rearwardly'- byreason of the connecting link between the said bar and the lever. Thisoperation will lift -the supplemental frame of the jack and thevehicle'to its highest point or to the height of the-uprights 4 at whichpoint the lever 10 is in a position nearly in the same plane Y with theside boards 1 of the body, whereupon .the U-shaped locking member 13will automatically engage the projecting end 9 of the link and lock theparts in position.

I AThis'will prevent any danger of the iaek dropping when in raisedposition.

If it isdesired Ato lift an automobile or any vehicle of considerableweight, the form last described is preferable. The automobile is drivenoventhe top of the jack and the handle 22 is turnedl which Will operatethe screw 21 and the-worm gear 27,W'hereupon the link 8a beingeccentricallymounted on the Worin gear 27, will be drawn rearwardly andby reajson of its connection to the transve'sely extending shaft 15,Will lift the uprights and the supplemental frame andcon- `se ently.accomplish the desired purpose.

jroin .the foregoing description of the While I have particularlydescribed the elements best adapted to perform the functions set forth,it is understood that varions changes in form, proportion and in theminor details of construction may be resorted to within the scope of theappended claim without departing from the spirit or sacrificing any of-the principles of the invention.

I claim:

In a vehiclej ack, a rectangular'shaped body, swinging uprights pivotedat their lower ends on opposite sides of said body, and adjacent theends thereof, parallel longitudinally extending side bars pivoted to theup- .per ends of the uprights to form a supplemy hand in presence of twosubscribing witnesses.

llfitnesses WILLIAM l5. lInL'r, HENRY S. BROWN.

WALLACE R. GRAY.

